Speed-changing mechanism.



H. L. BEELER.

SPEED CHANGING MECHANISM.

APPLICATION FILED SEPT. 25, 1911.

1,015,986, Patented Jan. 30, 1912.

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H. L. BEELER.

SPEED CHANGING MECHANISM.

APPLICATION FILED SEPT. 25, 1911.

1,015,986. Patented 32111.30, 1912..

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HERBERT L. BEELER, F CINCINNATI, OHIO, ASSIGNOR TO THE JOHN B. MORRISMACHINE TOOL COMPANY, GE CINCINNATI, OHIO, A CORPORATION OF OHIO.

SPEED-CHANGING DIECHANISM.

Application filed September 25,1911.

To all whom it may concern:

Be it known that I, 'HERBERT L. BnnLEn,

a citizen of the United States, residing at Cincinnati, in the county ofHamilton and State of Ohio, have invented certain new and usefulImprovements in Speed-0hanging Mechanism, of which the following is aspecification.

It is the object of my invention to provide novel speed changingmechanism capable of a great variety of changes by mechanisin arrangedin' compact form; further obtained, and the invention 3 which may besuitably secured to to provide novel mechanism by which a pluranges maybe will be readily understood from the following description and claims.and from the drawings, in which latter:

Figure 1 is a plan view of my improved device, with the frame and theinclosing casings partly broken away and one of the operating handlesshown in axial section for better illustration of parts. Fig. 2 is afront elevation of the same. Fig. 3 is a rality of multiples of speedvertical section of the same on the line 33 of Fig. l, the operatinghandle for sliding the tumbler-gear being also shown in axial sectionfor better illustration of parts. Fig. 4 is a. vertical section of myimproved device taken on the line l4 of Fig. 1. Fig. 5 is'a detail takenon the line 55 of Fig. 1. Fig. 6 is an end elevation 01" my improveddevice; and, Fig. 7 is a diagrammatic representation of the same withthe gears laid out in plane.

My invention is illustrated as employed.

for the purpose of changing the speeds of rotation of the lead-screw andthe feed-rod, for instance, in a metal turning lathe, the lead-screwbeing shown broken away at 11, the feed-rod being shown broken away at12, and the main frame of the lathe being shown broken away at 13.

14 represents the casing or gearbox, the main frame. f 15 represents, inthe present exemplification, the driving shaft, 16 the driven shaft, and17 an intermediate shaft, also hereinafter referred to as thecounter-shaft, which is operatively located between the driving anddriven shafts. It is of course obvious that tlm direction of thetransmission of motion may be reversed without departing from the spiritof my invention.

' Specification of Letters Patent.

Patented Jan. 30, 1912. Serial No. 651,116.

21 is a nest of diversely-sized gears, hereinafter referred to as thecone-of-gears, secured to the shaft 15.

22 is a tumbler-gear on a stud 23 on a tunibler-arm 24 pivoted abouttumblershaft 25, journaled in bearings 26 in the gear-box and having apinion 27-thereon receiving motion from a suitable source of power, asfrom the spindle of the lathe.

28 is a gear which meshes, with the tumblcr-gear 22, and hasspline--conucction 29 with the tumbler-shaft. The tumbler-arm isarranged to be moved longitudinally of the tumbler-shaft for bringingthe tumblergear thereon opposite any one or" the gears of thecone-of-gears.

I have provided novel positioning and locking means for the tumbler-arm.The tumbler-arm has locking-pin 31 thereon, shown as a pull-pin, havingconnection with the handle 32 of the tumbler-arm and normally urgedoutwardly by a spring 33. 34, ill, are a series of holes which coactwith the locking-pin, so that when the lockingpin is located in anygiven hole the tumblergear will he in proper mesh with the correspondinggiven gear of the cone-of-gears.

35 is a comb on theiront wall 36 of the casing, the sides of the teethof the comb being presented toward said front wall, so that the pin maybe moved across said front Wall lengthwise of said teeth in the spacesbetween the same, and be guided between the adjacent side walls of saidteeth, and snap into the hole .therebetwcen when the pin reaches thehole. The ends of the teeth of the comb are beveled at both sides, asshown at 37, for leading the pin into the spaces between the adjacentside walls of the teeth, these beveled faces being distanced from theholes so as to locate the tumblergear in lateral position opposite thegear with which the hole corresponds prior to meshing position thereof,for insuring that meshing relation will be had only with said given gearof said cone-of-gearswhen bringing said tumbler-gear into meshingengagement, further insuring that said tumblergear will be brought outof meshing relation with any previously meshed gear of saidcone-of-gears, and preventing that the corners only of the gears will bebrought into meshing relation, in other words, insuring that the meshinggear-teeth will engage throughout their entire lengths.

52 having spline-connection 53 With said shaft. The group of gears 49eoacts with the group of gears 41. The group of gears 49 is arranged tobe moved laterally for causing meshing relation between the gears 50 and43 or between the gears 51 and 44 or said group of gears 49 may beplaced in neutral position between the gears 43 and 44, which are spacedapart for the purpose.

55 is a group of gears which in the present instance comprises the gears56, 57 and 58, which rotate with and are laterally slidable lengthwiseof the shaft 16, as by being on a sleeve 59 having spline-connection 60with said shaft. ranged to be moved laterally for causing meshingrelation between the gears 56 and 46, or between the gears 57 and 47, orbe;

tween the gears 58 and '48, the gears 46, 47 and-48 being spaced apartfor the purpose.

The lead screw' 11 .is journale-d in a bearing 61 and the feed-rod 12 isjournaled in a bearing 62, the bearings 61 'and 62 being on a bracket 68secured to the main frame. A gear 64 is secured to the leadscrew and agear 65 is secured to thefeed-rod. These gears are located inspaced-apart relation longitudinally of the screw and rod. 6611s a gearrotating with but slidablelongitudinally of the shaft 16, as by means ofthe spline-connection 67, for locating the gears 64, 65 and 66 indifferent crossesectional planes when the gear 66 is out of -meshingrelation with both; the gears 64 and 65, or for placing the gear 66 incoincidentcross.

sectional plane and meshing relation with,

either gear 64 or. 65.

68 is a cover secured to the frame, in which said gears are located.

For accomplishing lateral shifting of the group of having 'a ork 72pivoted thereon on a pin 73, the tines of the fork bein-greceived attherespective sides of the gear 50. y The arm 71 is on a rock-shaft74'journaled in a bearing 75 ofthe casing and provided with an arm 7 6having a'handle 77 which has a pin 78 secured thereto, the pin beingpressed outwardlyby a spring 7 9 into holes 80, 81, 82, at the front ofthe casing.

The group of gears 55 is shifted laterally by meansof an arm 86 having ashoe 87 pivoted thereon on a pin 88 and received in an annular groove 89of the sleeve 59. The

The group of gears 55 is an "to be brought close together.

ears 51, 1 provide an arm'71 arm 86 is secured to a rock-shaft 91journaled in abearing 92 of the gear-box and having an operating arm 93provided with an operating handle 94 which connects with a pin 95arranged to be received in any one .of the holes 96, 97 and 08 in thecasing.

For shifting the gear 66 laterally I pro- "vide a fork 101, the tines ofwhich are received at its sides and which is pivoted on a pin 102 on anarm 103 secured to a rockshaft 104 journaled in a bearing 105 in thecover and having a hand-wheel 106 thereon. 107, 108, are a pair of stopsin the form of lugs on the inside wall of the cover 68.

The cone-of-gcars with its tumbler-gear and the gears of the group ofgears 49 and 41 and the gears of the group of gears- 55 and 42 are soarranged with relation to their diameters, that movement of the arms 24,76 and 93, for operating said tumbler-gear and group of gears 49 and 55respectively will in one direction for effecting increase of speed andin the other-direction for eifect-in'gdecrease of speed, so that coirfusion of the operator is avoided and coinpactness of a raiigemeiit ofthe gears is obtained. Thus for decrease of speed of the cone-of-gears,the arm 24 is moved in the direction of the arrow a, for decrease ofspeed'between the group of gears 49 and 4.1, the" arm '2' 6 is moved inthe direction of the arrow 6, and for decrease of speed between thegroup of gears 42 and 55, the handle 93 is moved in the direction of thearrow 0.

The conc-of-gears and the group of gears 49 have their smaller gears inadjr cent relation, while the group of gears 41 and 42 have their largergears in adjacent relation, and the cone-of-gears and the group of gears42 have their smallest and largest gears in opposed relation.

My improved device further permits five series .of'stepped gears to beemployed collectively having three axes of rotation, three "of saidseries of gears being opposite each other in successive reversedstepped. relation and two pairs of said series being respectively inaxial line. The arrangement enables the centers of rotation of the gearsHaving thus fully described my invention, what I claim as new and desireto secure by Letters Patent, is: p

1. In combination, a fixedly positioned countershaft, a plurality ofgroups of spaced-apart gears thereon, and laterally slida-blegear-sleeves between which said fixedly'positioned countershaft isoperatively located, said laterally slidable gear-sleeves comprisinggears arranged for operative connection with said respective pluralityof groups of spaced-apart gears 2. In combination, a fixedly positionedcountershaft, a plurality of groups of spaced-apart gears thereon, andlaterally slidable gear-sleeves between which said fixedly positionedcountershaft is operatively located, said laterally slidable gearsleevescomprising gears arranged for operative connection with said respectiveplurality of groups of spaced-apart gears, a nest of 'diversely-sizedgears whose rotary axes are coincident with therotary axis of one ofsaid gear-sleeves, and a tumbler-gear 19 arranged to mesh the respectivegears of said nest of diversely-sized.gears.

3. In combination, a plurality of interme diate groups of spaced-apartgears having coincident rotary axes, a laterally slidable group ofdiversely-sized driving gears havingselective operative connection withone of said first-named groups, a pair'of operated shafts, a gearforeachof said shafts, and a pair of slidable gear elements, one

2 of which comprises a plurality of diverselysized gears havingselective operative connection with the other of said first-namedgroups, and the other of which has selective operative connection withsaid respective gears for said operated shafts.

4. In combination, a plurality of inter-' mediate groups of'spaced-apartgears having coincident rotary axes, a cone-of-gears and a laterallyslidable group of diverselysized driving gears driven by saidcone-ofgears, said laterally slidable group of gears having selectiveoperative relation with one of said first-namedgroups, a pair ofoperated shafts, a gear for each of said shafts,

and a pair of slidable gear elements, one of which comprises a pluralityof diverselysized gears having selective operative relation with theother of said first-named groups, and'the .other of which has opera- 40tive relation with said respective gears for said operated shafts.

' 5. In speed changing mechanism, the combination of a driving shaft, adriven shaft, and a pair of spaced-apart geargroups, a slidable group ofdiversely-sizedgears'rotating with said driving shaft and havingselective operative connection with one of said first-named gear-groupsand a slidable group of diversely-sized gears rotating with said drivenshaft and having selective operative connection with the other of saidfirst-named gear-groups.

6. In speed changing mechanism, the combination of-a pair ofspaced-apart geargroups respectively compnsing gears of differentdiameters, a driving shaft, a slidable group of diversely-sized gearsrotating with said driving shaft and having selective operativeconnection with one of said first-named gear-groups, a slidable group ofdiversely-sized gears rotating with said driven shaft and havingselective operative connection with the other of said first namedgear-groups, a pair of operated shafts, a gear for each of the latter,and a laterally slidable gear rotating with said- .sized gears.

8. In combination, three shafts comprising a driving shaft and a drivenshaft, and

four groups of diversely-sized gears and a cone-of-gears mountedthereon,'two of said groups of diversely-sized gears beinglongitudinally slidable for operative connection with twoothersof saidgroups of diverselysized gears, a tumbler-gear coacting with therespective gears of said cone-of-gears, a pair of operated shafts, andmeans for selectively operatively connecting either of said operatedshafts with said driven shaft.

9. In speed changing mechanism, the combination of a cone-of-gears, atumblergear, a laterally movable pivoted tumblerarm therefor, .a wallpast which said arm projects, said arm comprising a handle outside saidwall, said wall having a comb thereon the teeth whereof have one oftheir sides-presented to said wall, said wall provided with holesbetween said teeth, and a pin on said arm having connection -with saidhandle arranged to be guided lengthwise of said teeth .into said holes.

" 10. In speed changing mechanism, the

combination of a driven shaft, a pair of operated shafts, a pair ofgears for the latter located in spaced apart cross sectional planes, agear rotating with and slidable on said driven shaft, the teeth of allsaid gears arranged to be placed in different cross-seoti'onal planes,and means for sliding said last-named gear laterally comprising a shoefor sliding said gear, a pivoted arm on which said shoe is mounted, andstops at the respective sides of said arm for limiting the movement ofsaid arm when said slidable gear is in meshing relation with the respective gears of said pair of gears.

11. In combination, a plurality of intermediate groups of spaced-apartgears having coincident rotary axes, and laterally slidable groups ofdiversely-sized gears between Which said first-named groups areoperatively located, the gears. of said laterally slidable groups ofdi'versely-sized gears arranged to coact with the gears of saidrespective intermediate groups of spaced-apart gears.

12. In speed changing mechanism, the combination of 'a cone ofdiversely-sized gears and a group of diversely-sized gears havingcoincident rotaryaxes and arranged in step-relation with their smallergears adjacent'to each other, and a pair of groups of diversely-sizedgears having co incident rotary axes arranged in step-relation withtheir larger gears adjacent to each other, one of said last-named groupsbeing opposite said. cone-of-gears and the other of said last-namedgroups being opposite said first-named group, and gearin havingselectiveoperative connection wit the respecgroup 1 of gears opposite smallestgears respectively of said interm.e-

diate group operatively positioned between respectively the smallest andlargest gears of the othersof said groups, and a pair of coacti-nggroups of diversely-sized gears respectively in line with saidcone-of-gears and said intermediate group.

- 14. In speed changing mechanism, the combination of a pair of groupsof diversely-sized gears arranged in step-relation with their largergears. in adjacent relation,

a pair of laterally slidable groups of diversely-sized gears arranged instep-relation between which said last-named groups are operativelylocated for being brought into meshing relation therewith and havingtheir smaller gears in adjacent cross-sectional planes, an operating armfor each of said laterally slidable groups, a cone-of-gears, in axialline with one of said laterally slidable groups, the said cone-of-gearsand lastnamed group having their smaller gears in adjacent relation, 9.tumbler-gear for said cone-of-gears, and an operating arm therefor, allsaid operating arms movable in similar directions for increase or fordecrease of speed-relations between said gears.

ois-nee 15. In combination, five series of stepped gears, three of whichseries are oppositely arranged and two pairs of which series are axiallyarranged, the said series of stepped gears having three rotary axes andarranged for transmitting motion from one to the other of said series ofstepped gears.

16. In combination, five series of stepped gears, three of which seriesare oppositely arranged and two pairs of which series are axiallyarranged, the said series of stepped gears having three rotary axes andarranged for transmitting motion from one to the other'of said series ofstepped gears, a tumbler-gear, and means for causing selective meshingbetween said tumbler-gear and the respective gears of one of said seriesof stepped gears.

:'17. In combination, five series of stepped gears, three of which areopposite each other in successive reversed stepped relation and twopairs of said series being respectively in axial line, the said fiveseries of stepped gears collectively having three axes of rotation andarranged. for transmitting rotary movement from one to the otherthereof.

18. In combination, five series of stepped gears, three of which areopposite each other in successive reversed stepped relation and twopair-sot said series being respectively in axial line, the said fiveseries of stepped gears collectively having three axes of rota-- tionand arranged for transmitting rotary movement from one to the otherthereof, two of said series of stepped gears being movable lengthwise oftheir rotary axes with rela tion to two others of said series, and atumbler-gear arranged for being selectively meshed with the gears of oneof said series.

In testimony whereof, l have signed my name hereto in the presence oftwo subscrib ing witnesses.

- HERBERT L. BEELER.

Witnesses:

. CHAs. E. WEBER,

THERESA SILnnn.

(lo-pies 01 this patent may be obtained for five cents each, byaddressing the Commissioner of Patents, Washington, D. G.

